四分律刪繁補闕行事鈔 3.297

3.297

若有因緣寺中宿者，不得臥僧床席，當以己物藉之，亦勿臥沙門被中（應自設供，供養於僧；豈損他供，自害善器）。并調戲言笑，說非法事。沙門未眠，不得先寢，為除憍慢故。又勿坐僧床席，輕侮僧故。俗中貴士之座，猶不許賤人升之；況出世高僧，輒便相擬。是以經中，共僧同床，半身枯也。如是因緣，如別廣說。若至明晨，先沙門起（修恭敬之行）。

If due to circumstances one lodges overnight in a monastery, one must not lie on the beds or mats of the saṃgha, but should pad them with one's own belongings; nor should one lie inside the quilts of śramaṇas (one ought to provide offerings oneself to give to the saṃgha; how could one damage the offerings of others and harm one's own vessel of goodness?), nor engage in teasing, laughing, and discussing non-Dharma matters. When the śramaṇas have not yet slept, one must not go to sleep first, in order to eliminate arrogance. Furthermore, do not sit on the beds or mats of the saṃgha, which constitutes showing contempt for the saṃgha. In secular society, the seats of noble gentlemen are still not permitted to be mounted by lowly persons; how much less should one casually compare oneself to eminent monks of the supramundane! For this reason, the sūtra says that sharing a bed with a monk causes half of one's body to wither. Such conditions are explained in detail elsewhere. When the next morning arrives, rise before the śramaṇas (cultivating the practice of reverence).